Application Guide
How to Apply for Director, Product Development
at Invinity Energy Systems Plc
🏢 About Invinity Energy Systems Plc
Invinity Energy Systems is a pioneer in vanadium flow battery technology, offering a safer, longer-lasting alternative to lithium-ion for grid-scale energy storage. With 75 MWh deployed across 15 countries and backing from major institutions like the UK's National Wealth Fund and the U.S. Department of Energy, Invinity is at the forefront of enabling a reliable, low-carbon grid. Working here means contributing to a mission-critical solution in the fight against climate change.
About This Role
As Director of Product Development, you will lead the evolution of Invinity's standardized vanadium flow battery products from concept through commercialization. This role is impactful because you'll directly shape the technology that enables renewable energy to become a stable grid contributor, driving product strategy, engineering execution, and cross-functional collaboration to scale manufacturing and deployment.
💡 A Day in the Life
You'll start by reviewing product development metrics and meeting with engineering leads to discuss progress on next-gen stack design. Mid-morning, you might join a cross-functional call with manufacturing and supply chain to align on BOM cost reduction targets. Afternoons are often spent on strategic planning—evaluating new chemistries or features—and mentoring your team. The role blends hands-on technical direction with leadership, all while keeping the end goal of reliable, long-duration storage in focus.
🚀 Application Tools
🎯 Who Invinity Energy Systems Plc Is Looking For
- Experienced in product development of electrochemical energy storage systems, ideally flow batteries or similar electro-chemical systems, with a track record of taking products from design to production.
- Strong background in systems engineering, electrochemistry, or electrical engineering, with hands-on understanding of battery cell, stack, and system-level design trade-offs.
- Proven leadership in managing cross-functional teams (engineering, manufacturing, supply chain) and driving product roadmaps aligned with business goals.
- Comfortable working in a fast-paced, scaling environment; experience at a growth-stage clean energy company is a plus.
📝 Tips for Applying to Invinity Energy Systems Plc
Highlight specific experience with vanadium flow battery technology or related redox flow systems—mention any projects where you improved energy density, reduced cost, or scaled production.
Quantify your impact: e.g., 'Led product development that reduced system cost by 20% while maintaining 30-year lifespan'—Invinity values durability and cost-competitiveness.
Show understanding of grid-scale energy storage challenges: degradation, safety, and continuous cycling—connect your experience to solving these with flow battery advantages.
Demonstrate familiarity with Invinity's specific products (e.g., VS3) and their modular, standardized approach—reference their deployed projects in your cover letter.
Emphasize experience with regulatory standards (UL, IEC) and manufacturing scale-up—Invinity is moving from project-based to mass production.
✉️ What to Emphasize in Your Cover Letter
['Your passion for stationary energy storage and why flow batteries are the right solution for grid decarbonization.', 'Concrete examples of leading product development cycles for electro-chemical systems, including design, testing, and manufacturing handoff.', "How your leadership style aligns with Invinity's mission and fast-growing culture—mention cross-functional collaboration and strategic thinking.", "Specific ideas for advancing Invinity's product roadmap (e.g., cost reduction, performance improvements, or new applications)."]
Generate Cover Letter →🔍 Research Before Applying
To stand out, make sure you've researched:
- → Read Invinity's recent press releases and investor presentations to understand their growth strategy and product milestones (e.g., VS3 launch, funding rounds).
- → Study the technical specifications of Invinity's VS3 battery system and compare with competitors like ESS Inc. or Redflow.
- → Review case studies of their largest deployments (e.g., UK, Canada, Australia) to understand customer requirements and operational challenges.
- → Follow industry reports on vanadium flow battery market trends, cost projections, and policy support (e.g., DOE funding, UK's net-zero targets).
💬 Prepare for These Interview Topics
Based on this role, you may be asked about:
⚠️ Common Mistakes to Avoid
- Submitting a generic product development resume without emphasizing energy storage or electrochemical systems—this role requires domain expertise.
- Focusing only on lithium-ion experience without acknowledging its limitations for grid storage—show enthusiasm for flow battery advantages.
- Neglecting to mention experience with manufacturing scale-up or standardization—Invinity is moving from bespoke to mass production.
📅 Application Timeline
This position is open until filled. However, we recommend applying as soon as possible as roles at mission-driven organizations tend to fill quickly.
Typical hiring timeline:
Application Review
1-2 weeks
Initial Screening
Phone call or written assessment
Interviews
1-2 rounds, usually virtual
Offer
Congratulations!
Ready to Apply?
Good luck with your application to Invinity Energy Systems Plc!